Alex, have you considered a possiblity of a rude guy trying to be helpful?:))
We all have sensitive spots and these come out strongly when we try to learn something new. Mistakes are common and we feel like ignorant children. These can make us overly tender and take one single statement related to one specific point as evidence of our general stupidity, ineptness and ultimate failure. This is why I constantly say that praise is important in learning. Not enough praise will lead to unsure, timid learners that all the snazzy tech and hip teaching methods won't cure.
With that said....some cultures are very blunt, certain people within those cultures are even more blunt, and the normal phrasing in their native language doesn't help. Asking or saying things to a student like:
Why do you make such stupid mistakes?
You are very dumb,. Why don't you learn to be less dumb?
I can't understand you. Your speaking is awful! I do not want to talk to such a gibbering moron like you.
You sound retarded. Why can't you say this easy word right? What's wrong with you?
....are obviously hurtful, but still said to learners. I don't want to point fingers, but some cultures can get this blunt because that is how THEY were talked to in school. If it was OK for their teacher to ridicule them....why can't they ridicule you? That's just education! Toughen up!
For me, rude feedback is anything involving a negative word like stupid, dumb, idiot, moron etc and phases that indicate the teacher dislikes the student, or that the student is a hopeless failure of a human being with a low IQ. Some people have a hard time with languages, and some people are genuine morons....but they normally know that and apologize for it at the start.
